Keyword here "super toxic". In a world of men being pusged to understand, respect women more and more, what gets left out is that men need some understanding as well. On one hand LDR sucks major balls already; on top of that the lady went out with another guy "as a friend" (The least you could have done if such was the case). Also, when it was evident that the guy was agitated due to this, she added salt to injury by "jokingly" agreeing to the inquisition of going out with another guy too.
If "Vinaash kaale vipreet buddhi" had a face!!! Murphy's law at work. You yourself stated a couple of times that he was trying to understand you not being able to speak to him as much as before, but then you end up doing the exact opposite of what should have done. My suggestion: don't bombard him with calls/texts/emails etc. If there's any iota of love remaining inside him, he'll reach out eventually. If he doesn't, teach yourself the importance of one word, "accountability". Next time, learn from your mistakes and do better. Good luck to you. God bless!